Improvement in machines for making horseshoe-nails



UNITED STATES PATENT OFFICEO GEORGE W. SARGENT, 0F FAIRHAVEN, AND BENJAMIN I. RIDER, OF CHELSEA, MASSACHUSETTS.

IMPROVEMENT IN MACHINES FOR MAKING HORSESHOE-NAILS.

Specification forming part of Letters Patent No. 55,912, dated June 26, 1866.

To all. whom fit may concern:

Be it known that we, GEoRGE W. SAEGENLy of Fairhaven, in the county of Bristol and State of Massachusetts, and BENJAMIN P. RIDER, of Chelsea, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Machines for l-.Iaking Horseshoe-Nails; and We do hereby declare that the followin g is a full, clear, and exact description of the same, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is a perspective View. Fig. 2 is'an enlarged sectional view of the adjustable boxes in which the main shaft is journaled; and Fig. 3 is a sectional View of the hammers and the connecting-bar by which the hammers are operated.`

Similar letters indicate like parts in the veveral iigures.

Referring to the drawings, A represents the base of the machine. At or near the center of the base is firmly secured a substantial upright frame or head, B, in which are supported the hammers C C C C', of which there are four, two being arranged in the sides of the head and so 'as to vibrate in a horizontal plane, while the other two are placed in the upper and lower parts of the head, respectively, and vibrate in a vertical plane. These hammers are journaled at their inner ends in recesses within the head B, so as to move freely to and from each other at their outer ends.

The operation ot' the hammers is such that while thetwo which move in the horizontal plane are brought together, those moving in' the vertical plane are separated from each other, and vice versa, which is effected by means presently to be explained, so that blows are alternately struck on the two oppositesides of the nail-rod, respectively.

The hammers may be journaled to the head in any suitable manner. In the drawings they are shown as provided with a iixed journal, c, in Fig. 3, and the hammer is inserted within the recess, where it is held bya cap, e, screwed to the head on either side.

Motion is imparted to the hammers in the following manner: At the inner side of the rear portion of each hammer is a circular recess, as shown in Fig. 3, into which iits so as to play easily, but snugly, a corresponding projection, d, formed upon each side of the connecting piece or arm D, which latter extends to the rear ot' the machine, and is supported at the rear and front ends in suitable guides or ways, so as to slide freely therein. At a short distance from its rear end the connecting piece or arm D is formed with an enlargement, so as to provide for an elongated opening in the same, as shown in Fig. 3. There are two of these sliding connecting pieces or arms to operate, respectively, the two sets of hammers,

and they are arranged in relation to each other in any convenient manner, so. as to reciprocate in opposite directions simultaneously. Within the oblong openings or slots formed in the enlargements of the connecting-pieces D are fitted to work cams F, formed upon the shaft E and projecting from opposite sides of the sameso that when the shaft revolves the connecting pieces or arms D will be reciprocated simultaneously in` opposite directions upon each revolution of the shaft, whereby a very rapid motion can be imparted to the hammers.

By reason of the relative position of the projections d on the connecting-piecesI D with the journal or fulcrum of the hammers it will beteen that a very small range of motion of the said connecting-pieces in a longitudinal direcsion will impart a highly-increased range of motion to the outer ends of the hammers.

rlhe cam-shaft E is journaled at each side in adjustable boxes G, as shown in Fig. 2, the said boxes being supported in braces L, resting in the rear upon the base A and attached in front to the head B. The boxes Gr are rendered adjustable by means of stout springs of coiled wire, H, rubber, or other suitable material placed at each side ofthe box and confined within a recess in the supporting-brace. The object of this device is to allow the shaft to yield in a measure in case the ends of the hammers should be brought together upon iron which may not have been sufficiently heated, or any other hard and unyielding substance which would render the hammers liable to oe broken or otherwise injured.

At the front part of the machine is a stand ard, I, upon which is supported the nail-rod holder K.

The hammers are represented as lbeing operated by means of projections on the connectin g-pieces D fitting* Withinrecesses in the rear of the han'miers. Itis evident that other means of connection may be employed for producing the same effect, .which may be considered as equivalent devices.

In the operation of the machine the rod from which the nail is formed is placed upon the holder K and projected forward between the hammers. Motion being.;` imparted to the shaft from any suitable power, a double reciprocating movement is communicated, by means of the cams, to the sliding connectingpieces D, each of the latter moving,` simultaneously in opposite directions. By means of the connection of the sliding' pieces D with the hammers a rapid l motion is imparted to the latter, the two of one set being brought together upon the nalrod While the other tWo are withdrawing' from each other, thus alternately hammering and forming,` the two sides of the nail.

Having` thus described our invention, what We claim, and desire to secure by Letters Patent, is-

1. Operating` the hammers G G C G by means of the sliding connecting-pieces D and cam F, substantially as and for the purpose specified.

2. `The adjustable boxes Gr, in combination with the cam-shaft E, connecting-pieces D, and the hammers, as and for the purpose specied.

In testimony whereof we have signed our names to this specification in the presence of two subscribing` Witnesses.

GEO. W. SARGENT. BENJAMIN P. RIDER.

Witnesses J. H. ADAMS, F. W. JAcoBs. 

